// 皇宫的场景
/**
 * 显示皇宫
 */
function showQianchao() {
    refresh();
    stopMusic();
    DrawBackgroundImage('img/bg/0.jpg')
    showMainButton('宣政殿', 1, noText)
    showMainButton('养心殿', 2, noText)
    showMainButton('紫宸殿', 3, noText)
    showMainButton('西殿', 4, noText)
    showMainButton('东殿', 5, noText)
    showMainButton('后宫', 6, noText)
    showMainButton('京城', 7, showJingcheng)
}